In chapter three , non - linear characters of evaluations system are analyzed by non - linear of systems , evaluation attributes and evaluation ways , which supply non - linear evaluation with theory basis . the quantification of attributes and the distribution of weight are indispensable in the evaluation of complex systems 目前对复杂系统进行评估主要采用线性方法,本文第三章从系统本质的非线性、评估指标的非线性、评估方法的非线性三个方面分析了评估体系的非线性特征,为非线性评估提供了理论依据。
In addition , the computer method is proposed to get the stochastic pile capacity and the random optimum analysis is done in virtue of the genetic algorithm which can easily think over the influence of the randomness of pile capacity on the internal force of capping beam based on the thorough analysis about the primary factors influencing the randomness of pile capacity . an optimization program is worked out for the analysis which can consider the pile - soil - cap interaction and the non - linear character of the foundation soil 此外,本文对影响基桩承载力差异性的主要因素进行了深入分析,提出了基桩承载力随机生成的计算机方法,并采用遗传算法对承台梁内力进行随机优化分析,可方便地考虑基桩承载力随机性对承台梁内力的影响,并开发出能考虑桩?土?承台共同工作及地基土非线性特性的桩基承台梁内力优化分析程序。
But , the eeg signal that we can acquired is very weak and is badly contaminated by strong background noise , such as electrooculogram ( eog ) , electrocardiogram ( ecg ) , and line noise ( 50hz or 60 hz power frequency interference ) , etc . eeg is a typical non - stationary random signal with a certain extent of non - gaussian and non - linear character 但是我们能够获得的脑电信号一般非常微弱、并伴有很强的背景噪声,是一类典型的非平稳的随机信号,且存在一定的非高斯性和非线性。传统的分析处理方法一般将脑电信号近似认为是线性的准平稳的高斯分布随机信号,这使得分析结果往往不能令人满意、实用性差。
Paper also study the non - linear character of structure with push - over analysis , from the result , paper learn that the push - over method can reflect the elastoplastic trait of structure very well , but contrasted with the dynamic response analysis , the former method underestimate the earthquake resistant capability of structure . through the mechanics analysis , paper also put up a more reasonable design project , and the nonlinear dynamic program of three - dimension also proves the superiority of the project 论文还将目前流行的弹塑性静力分析方法( push - overanalysis )与时程反应方法进行了比较,弹塑性静力方法能够很好地反映结构的弹塑性变形能力,但它对结构抗震能力的估计与时程反应法相比要偏于保守一些。